IMO if you bounce back and I were in your position I would never return to any kind of work at all for a very long time (like min a year or more). You’ve spent 2 1/2 years in the deepest hell we ever experience, and it’s going to take a very, very long journey to build back slowly and retain improvements without getting PEM and crashes.
It’s the only way I’ve ever seen it done with others were successful with treatments, people take a slow and methodical recovery using a plan with aggressive rest, full control of exertion, and definitely no work. They add only little bits of minor exertion slowly over a long time. If something they add causes PEM or crash they immediately stop it for a long time. In my opinion work would be the last and least important part of life in your recently severe situation.